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MicroRNA-7-5p regulates osteogenic differentiation of hMSCs via targeting CMKLR1

B Chen1, J Meng, Y-T Zeng

  • 1Department of Orthodontics, Qingdao Municipal Hospital, Nanjing Medical University, Qingdao, China. yuanxiaoqd@163.com.

European Review for Medical and Pharmacological Sciences
|December 12, 2018
PubMed
Abstract

Insights

MicroRNA-7-5p promotes bone formation in human mesenchymal stem cells (hMSCs). It achieves this by targeting CMKLR1, enhancing osteogenic gene expression and mineralization.

Area of Science:

  • Stem cell biology
  • Molecular biology
  • Biochemistry

Background:

  • MicroRNAs play crucial roles in regulating cellular processes.
  • Osteogenic differentiation of human mesenchymal stem cells (hMSCs) is vital for bone regeneration.
  • Understanding the molecular mechanisms governing hMSC osteogenesis is essential for therapeutic applications.

Purpose of the Study:

  • To elucidate the role of microRNA-7-5p in hMSC osteogenic differentiation.
  • To investigate the underlying molecular mechanism involving CMKLR1.

Main Methods:

  • Quantitative real-time PCR (qRT-PCR) to measure gene and microRNA expression.
  • Transfection of microRNA-7-5p mimics and inhibitors.
  • Alizarin red staining and ALP activity assays for osteogenic differentiation assessment.
  • Western blot analysis.
  • Luciferase reporter gene assay to validate target gene interaction.
  • Rescue experiments to confirm mechanism.

Main Results:

  • microRNA-7-5p expression increased during osteogenic differentiation.
  • Overexpression of microRNA-7-5p enhanced osteogenic gene (ALP, RUNX2) expression and mineralization.
  • CMKLR1 expression decreased during osteogenic differentiation and was identified as a direct target of microRNA-7-5p.
  • CMKLR1 overexpression reversed the pro-osteogenic effects of microRNA-7-5p.

Conclusions:

  • MicroRNA-7-5p acts as a positive regulator of hMSC osteogenic differentiation.
  • This promotion is mediated through the direct targeting of CMKLR1.
  • microRNA-7-5p holds potential as a therapeutic target for bone regeneration strategies.

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